As Earnings Report Disappoints, New CEO Corbat Warns of Continuing Slump Across Business Lines

A year after taking over as chief executive of Citigroup Inc., Michael Corbat is warning investors that the bank's sprawling collection of businesses could face more weakness in the months ahead.

The New York banking giant reported third-quarter results Tuesday that fell short of analyst estimates, hurt by a double-digit revenue drop in its fixed-income division, along with slides in mortgage-banking and investment-banking...